Measurement principle

　　In this study, the total copper was determined by the spectrophotometric method of sodium diethyldithiocarbamate, i.e., at high temperature, various copper compounds in the water samples were oxidized and dissolved by nitric acid to become n-divalent copper ions, and under the condition of ammonia, the copper ions complexed with sodium diethyldithiocarbamate to produce yellowish-brown complexes, and the absorbance of the system was directly proportional to the concentration of the copper ions in the range of a certain concentration, which means that the total copper content in the water samples was determined according to the spectrophotometric method of the total copper. The total copper content in the water sample can be determined according to the spectrophotometric method.

Main features

　　Touch screen display and command input; multiple sampling and measurement modes, unique design, lower failure rate, lower maintenance, lower reagent consumption and higher cost-effective.

Technical specifications

　　Method: Spectrophotometric detection of sodium diethyldithiocarbamate.

　　Measuring range: 0 mg/L-5 mg/L.

　　Accuracy: not more than ±10%.

　　Repeatability: not more than ±5%.

　　V. Measurement period: the minimum measurement period is 35min.

　　VI. Sampling cycle: time interval (10min-9999 min arbitrarily adjustable) and whole point measurement mode.

　　VII, calibration cycle: (1-99) days at any interval any moment adjustable.

　　VIII. Maintenance cycle: generally once a month, each time about 30 min.

　　Nine, reagent consumption: less than 0.5 yuan / sample.

　　X. Output: 1 RS-232, 1 RS485, 2 (4-20mA).

　　XI, environmental requirements: temperature-adjustable indoor, recommended temperature +5 ℃AC28 ℃; humidity ≤ 90% RH (no condensation).

　　XII, power supply: AC220 ± 10% V, 50 ± 10% Hz, 5 A.

　　XIII. Dimensions: H1500 mm × W500 mm × D450 mm.

　　XIV. Others:

　　1) Abnormal alarm and power failure will not lose data;

　　2) Touch screen display and command input;

　　(3) Abnormal reset and power failure after power, the instrument automatically discharges the residual reactants in the instrument and automatically restores the working state.